Display for Mobile Device with Abrasion Resistant Siloxane Coating

1. A display device comprising: a display and touch screen assembly; a substrate covering the display and touch screen assembly; a siloxane layer comprising a siloxane-organic interpenetrating network contacting the substrate, the siloxane layer having a hardness greater than a hardness of the substrate; another siloxane layer comprising a siloxane-organic interpenetrating network contacting the siloxane layer, the another siloxane layer having a hardness greater than the hardness of the siloxane layer, the siloxane layer and the another siloxane layer having a combined thickness of at least 20 microns; and a diamond-like nano-composite layer comprising an amorphous carbon and a siloxane contacting the another siloxane layer, the diamond-like nano-composite layer having a hardness greater than the hardness of the another siloxane layer.

2. The display device of claim 1 , wherein the device is a phone.

3. The display device of claim 1 , wherein the substrate is a co-extrusion of poly(methyl methacrylate) and polycarbonate.

4. The display device of claim 1 , wherein the substrate is a plastic lens.

5. The display device of claim 1 , wherein the substrate is affixed to a plastic lens.

6. The display device of claim 1 , wherein the substrate is affixed to a touch screen and display assembly.

7. The display device of claim 1 , wherein the siloxane layer and the another siloxane layer have a combined thickness of less than 75 microns.

8. The display device of claim 1 , wherein the diamond-like nano-composite layer is applied to the siloxane layer by a chemical vapor deposition process.

9. The display device of claim 8 , wherein the chemical vapor deposition process is selected from ion beam plasma enhanced chemical vapor deposition and plasma enhanced chemical vapor deposition.

10. The display device of claim 1 , wherein the siloxane layer comprises an interpenetrating network of a siloxane and an acrylic.

11. The display device of claim 1 , wherein the siloxane layer comprises from 25 wt. % to 50 wt. % siloxane.

12. The display device of claim 1 , wherein the another siloxane layer comprises an interpenetrating network of a siloxane and an acrylic.

13. The display device of claim 1 , wherein the another siloxane layer comprises from 10 wt. % to 25 wt. % siloxane.

14. The display device of claim 1 , wherein the siloxane layer has a hardness from 20 Vickers to 200 Vickers.

15. The display device of claim 1 , wherein the another siloxane layer has a hardness from 100 Vickers to 250 Vickers.

16. The display device of claim 1 , wherein the siloxane layer has a thickness from 20 microns to 50 microns.

17. The display device of claim 1 , wherein the another siloxane layer has a thickness from 5 microns to 25 microns.

18. The display device of claim 1 , wherein the amorphous carbon is an amorphous hydrogenated diamond-like carbon.

19. The display device of claim 1 , wherein the diamond-like nano-composite layer has a hardness of 400 Vickers or greater.

20. The display device of claim 1 , wherein the diamond-like nano-composite layer has a thickness between 3 microns and 20 microns.